Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 1 | /* |
| 2 | * Texas Instruments TLV320AIC26 low power audio CODEC |
| 3 | * ALSA SoC CODEC driver |
| 4 | * |
| 5 | * Copyright (C) 2008 Secret Lab Technologies Ltd. |
| 6 | */ |
| 7 | |
| 8 | #include <linux/module.h> |
| 9 | #include <linux/moduleparam.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/delay.h> |
| 12 | #include <linux/pm.h> |
| 13 | #include <linux/device.h> |
| 14 | #include <linux/sysfs.h> |
| 15 | #include <linux/spi/spi.h> |
| 16 | #include <sound/core.h> |
| 17 | #include <sound/pcm.h> |
| 18 | #include <sound/pcm_params.h> |
| 19 | #include <sound/soc.h> |
| 20 | #include <sound/soc-dapm.h> |
| 21 | #include <sound/soc-of-simple.h> |
| 22 | #include <sound/initval.h> |
| 23 | |
| 24 | #include "tlv320aic26.h" |
| 25 | |
| 26 | MODULE_DESCRIPTION("ASoC TLV320AIC26 codec driver"); |
| 27 | MODULE_AUTHOR("Grant Likely <grant.likely@secretlab.ca>"); |
| 28 | MODULE_LICENSE("GPL"); |
| 29 | |
| 30 | /* AIC26 driver private data */ |
| 31 | struct aic26 { |
| 32 | struct spi_device *spi; |
| 33 | struct snd_soc_codec codec; |
| 34 | u16 reg_cache[AIC26_NUM_REGS]; /* shadow registers */ |
| 35 | int master; |
| 36 | int datfm; |
| 37 | int mclk; |
| 38 | |
| 39 | /* Keyclick parameters */ |
| 40 | int keyclick_amplitude; |
| 41 | int keyclick_freq; |
| 42 | int keyclick_len; |
| 43 | }; |
| 44 | |
| 45 | /* --------------------------------------------------------------------- |
| 46 | * Register access routines |
| 47 | */ |
| 48 | static unsigned int aic26_reg_read(struct snd_soc_codec *codec, |
| 49 | unsigned int reg) |
| 50 | { |
| 51 | struct aic26 *aic26 = codec->private_data; |
| 52 | u16 *cache = codec->reg_cache; |
| 53 | u16 cmd, value; |
| 54 | u8 buffer[2]; |
| 55 | int rc; |
| 56 | |
| 57 | if (reg >= AIC26_NUM_REGS) { |
| 58 | WARN_ON_ONCE(1); |
| 59 | return 0; |
| 60 | } |
| 61 | |
| 62 | /* Do SPI transfer; first 16bits are command; remaining is |
| 63 | * register contents */ |
| 64 | cmd = AIC26_READ_COMMAND_WORD(reg); |
| 65 | buffer[0] = (cmd >> 8) & 0xff; |
| 66 | buffer[1] = cmd & 0xff; |
| 67 | rc = spi_write_then_read(aic26->spi, buffer, 2, buffer, 2); |
| 68 | if (rc) { |
| 69 | dev_err(&aic26->spi->dev, "AIC26 reg read error\n"); |
| 70 | return -EIO; |
| 71 | } |
| 72 | value = (buffer[0] << 8) | buffer[1]; |
| 73 | |
| 74 | /* Update the cache before returning with the value */ |
| 75 | cache[reg] = value; |
| 76 | return value; |
| 77 | } |
| 78 | |
| 79 | static unsigned int aic26_reg_read_cache(struct snd_soc_codec *codec, |
| 80 | unsigned int reg) |
| 81 | { |
| 82 | u16 *cache = codec->reg_cache; |
| 83 | |
| 84 | if (reg >= AIC26_NUM_REGS) { |
| 85 | WARN_ON_ONCE(1); |
| 86 | return 0; |
| 87 | } |
| 88 | |
| 89 | return cache[reg]; |
| 90 | } |
| 91 | |
| 92 | static int aic26_reg_write(struct snd_soc_codec *codec, unsigned int reg, |
| 93 | unsigned int value) |
| 94 | { |
| 95 | struct aic26 *aic26 = codec->private_data; |
| 96 | u16 *cache = codec->reg_cache; |
| 97 | u16 cmd; |
| 98 | u8 buffer[4]; |
| 99 | int rc; |
| 100 | |
| 101 | if (reg >= AIC26_NUM_REGS) { |
| 102 | WARN_ON_ONCE(1); |
| 103 | return -EINVAL; |
| 104 | } |
| 105 | |
| 106 | /* Do SPI transfer; first 16bits are command; remaining is data |
| 107 | * to write into register */ |
| 108 | cmd = AIC26_WRITE_COMMAND_WORD(reg); |
| 109 | buffer[0] = (cmd >> 8) & 0xff; |
| 110 | buffer[1] = cmd & 0xff; |
| 111 | buffer[2] = value >> 8; |
| 112 | buffer[3] = value; |
| 113 | rc = spi_write(aic26->spi, buffer, 4); |
| 114 | if (rc) { |
| 115 | dev_err(&aic26->spi->dev, "AIC26 reg read error\n"); |
| 116 | return -EIO; |
| 117 | } |
| 118 | |
| 119 | /* update cache before returning */ |
| 120 | cache[reg] = value; |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | /* --------------------------------------------------------------------- |
| 125 | * Digital Audio Interface Operations |
| 126 | */ |
| 127 | static int aic26_hw_params(struct snd_pcm_substream *substream, |
Mark Brown | dee89c4 | 2008-11-18 22:11:38 +0000 | [diff] [blame] | 128 | struct snd_pcm_hw_params *params, |
| 129 | struct snd_soc_dai *dai) |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 130 | { |
| 131 | struct snd_soc_pcm_runtime *rtd = substream->private_data; |
| 132 | struct snd_soc_device *socdev = rtd->socdev; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 133 | struct snd_soc_codec *codec = socdev->card->codec; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 134 | struct aic26 *aic26 = codec->private_data; |
| 135 | int fsref, divisor, wlen, pval, jval, dval, qval; |
| 136 | u16 reg; |
| 137 | |
| 138 | dev_dbg(&aic26->spi->dev, "aic26_hw_params(substream=%p, params=%p)\n", |
| 139 | substream, params); |
| 140 | dev_dbg(&aic26->spi->dev, "rate=%i format=%i\n", params_rate(params), |
| 141 | params_format(params)); |
| 142 | |
| 143 | switch (params_rate(params)) { |
| 144 | case 8000: fsref = 48000; divisor = AIC26_DIV_6; break; |
| 145 | case 11025: fsref = 44100; divisor = AIC26_DIV_4; break; |
| 146 | case 12000: fsref = 48000; divisor = AIC26_DIV_4; break; |
| 147 | case 16000: fsref = 48000; divisor = AIC26_DIV_3; break; |
| 148 | case 22050: fsref = 44100; divisor = AIC26_DIV_2; break; |
| 149 | case 24000: fsref = 48000; divisor = AIC26_DIV_2; break; |
| 150 | case 32000: fsref = 48000; divisor = AIC26_DIV_1_5; break; |
| 151 | case 44100: fsref = 44100; divisor = AIC26_DIV_1; break; |
| 152 | case 48000: fsref = 48000; divisor = AIC26_DIV_1; break; |
| 153 | default: |
| 154 | dev_dbg(&aic26->spi->dev, "bad rate\n"); return -EINVAL; |
| 155 | } |
| 156 | |
| 157 | /* select data word length */ |
| 158 | switch (params_format(params)) { |
| 159 | case SNDRV_PCM_FORMAT_S8: wlen = AIC26_WLEN_16; break; |
| 160 | case SNDRV_PCM_FORMAT_S16_BE: wlen = AIC26_WLEN_16; break; |
| 161 | case SNDRV_PCM_FORMAT_S24_BE: wlen = AIC26_WLEN_24; break; |
| 162 | case SNDRV_PCM_FORMAT_S32_BE: wlen = AIC26_WLEN_32; break; |
| 163 | default: |
| 164 | dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL; |
| 165 | } |
| 166 | |
| 167 | /* Configure PLL */ |
| 168 | pval = 1; |
| 169 | jval = (fsref == 44100) ? 7 : 8; |
| 170 | dval = (fsref == 44100) ? 5264 : 1920; |
| 171 | qval = 0; |
| 172 | reg = 0x8000 | qval << 11 | pval << 8 | jval << 2; |
| 173 | aic26_reg_write(codec, AIC26_REG_PLL_PROG1, reg); |
| 174 | reg = dval << 2; |
| 175 | aic26_reg_write(codec, AIC26_REG_PLL_PROG2, reg); |
| 176 | |
| 177 | /* Audio Control 3 (master mode, fsref rate) */ |
| 178 | reg = aic26_reg_read_cache(codec, AIC26_REG_AUDIO_CTRL3); |
| 179 | reg &= ~0xf800; |
| 180 | if (aic26->master) |
| 181 | reg |= 0x0800; |
| 182 | if (fsref == 48000) |
| 183 | reg |= 0x2000; |
| 184 | aic26_reg_write(codec, AIC26_REG_AUDIO_CTRL3, reg); |
| 185 | |
| 186 | /* Audio Control 1 (FSref divisor) */ |
| 187 | reg = aic26_reg_read_cache(codec, AIC26_REG_AUDIO_CTRL1); |
| 188 | reg &= ~0x0fff; |
| 189 | reg |= wlen | aic26->datfm | (divisor << 3) | divisor; |
| 190 | aic26_reg_write(codec, AIC26_REG_AUDIO_CTRL1, reg); |
| 191 | |
| 192 | return 0; |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * aic26_mute - Mute control to reduce noise when changing audio format |
| 197 | */ |
| 198 | static int aic26_mute(struct snd_soc_dai *dai, int mute) |
| 199 | { |
| 200 | struct snd_soc_codec *codec = dai->codec; |
| 201 | struct aic26 *aic26 = codec->private_data; |
| 202 | u16 reg = aic26_reg_read_cache(codec, AIC26_REG_DAC_GAIN); |
| 203 | |
| 204 | dev_dbg(&aic26->spi->dev, "aic26_mute(dai=%p, mute=%i)\n", |
| 205 | dai, mute); |
| 206 | |
| 207 | if (mute) |
| 208 | reg |= 0x8080; |
| 209 | else |
| 210 | reg &= ~0x8080; |
| 211 | aic26_reg_write(codec, AIC26_REG_DAC_GAIN, reg); |
| 212 | |
| 213 | return 0; |
| 214 | } |
| 215 | |
| 216 | static int aic26_set_sysclk(struct snd_soc_dai *codec_dai, |
| 217 | int clk_id, unsigned int freq, int dir) |
| 218 | { |
| 219 | struct snd_soc_codec *codec = codec_dai->codec; |
| 220 | struct aic26 *aic26 = codec->private_data; |
| 221 | |
| 222 | dev_dbg(&aic26->spi->dev, "aic26_set_sysclk(dai=%p, clk_id==%i," |
| 223 | " freq=%i, dir=%i)\n", |
| 224 | codec_dai, clk_id, freq, dir); |
| 225 | |
| 226 | /* MCLK needs to fall between 2MHz and 50 MHz */ |
| 227 | if ((freq < 2000000) || (freq > 50000000)) |
| 228 | return -EINVAL; |
| 229 | |
| 230 | aic26->mclk = freq; |
| 231 | return 0; |
| 232 | } |
| 233 | |
| 234 | static int aic26_set_fmt(struct snd_soc_dai *codec_dai, unsigned int fmt) |
| 235 | { |
| 236 | struct snd_soc_codec *codec = codec_dai->codec; |
| 237 | struct aic26 *aic26 = codec->private_data; |
| 238 | |
| 239 | dev_dbg(&aic26->spi->dev, "aic26_set_fmt(dai=%p, fmt==%i)\n", |
| 240 | codec_dai, fmt); |
| 241 | |
| 242 | /* set master/slave audio interface */ |
| 243 | switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { |
| 244 | case SND_SOC_DAIFMT_CBM_CFM: aic26->master = 1; break; |
| 245 | case SND_SOC_DAIFMT_CBS_CFS: aic26->master = 0; break; |
| 246 | default: |
| 247 | dev_dbg(&aic26->spi->dev, "bad master\n"); return -EINVAL; |
| 248 | } |
| 249 | |
| 250 | /* interface format */ |
| 251 | switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { |
| 252 | case SND_SOC_DAIFMT_I2S: aic26->datfm = AIC26_DATFM_I2S; break; |
| 253 | case SND_SOC_DAIFMT_DSP_A: aic26->datfm = AIC26_DATFM_DSP; break; |
| 254 | case SND_SOC_DAIFMT_RIGHT_J: aic26->datfm = AIC26_DATFM_RIGHTJ; break; |
| 255 | case SND_SOC_DAIFMT_LEFT_J: aic26->datfm = AIC26_DATFM_LEFTJ; break; |
| 256 | default: |
| 257 | dev_dbg(&aic26->spi->dev, "bad format\n"); return -EINVAL; |
| 258 | } |
| 259 | |
| 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | /* --------------------------------------------------------------------- |
| 264 | * Digital Audio Interface Definition |
| 265 | */ |
| 266 | #define AIC26_RATES (SNDRV_PCM_RATE_8000 | SNDRV_PCM_RATE_11025 |\ |
| 267 | SNDRV_PCM_RATE_16000 | SNDRV_PCM_RATE_22050 |\ |
| 268 | SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 |\ |
| 269 | SNDRV_PCM_RATE_48000) |
| 270 | #define AIC26_FORMATS (SNDRV_PCM_FMTBIT_S8 | SNDRV_PCM_FMTBIT_S16_BE |\ |
| 271 | SNDRV_PCM_FMTBIT_S24_BE | SNDRV_PCM_FMTBIT_S32_BE) |
| 272 | |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 273 | static struct snd_soc_dai_ops aic26_dai_ops = { |
| 274 | .hw_params = aic26_hw_params, |
| 275 | .digital_mute = aic26_mute, |
| 276 | .set_sysclk = aic26_set_sysclk, |
| 277 | .set_fmt = aic26_set_fmt, |
| 278 | }; |
| 279 | |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 280 | struct snd_soc_dai aic26_dai = { |
| 281 | .name = "tlv320aic26", |
| 282 | .playback = { |
| 283 | .stream_name = "Playback", |
| 284 | .channels_min = 2, |
| 285 | .channels_max = 2, |
| 286 | .rates = AIC26_RATES, |
| 287 | .formats = AIC26_FORMATS, |
| 288 | }, |
| 289 | .capture = { |
| 290 | .stream_name = "Capture", |
| 291 | .channels_min = 2, |
| 292 | .channels_max = 2, |
| 293 | .rates = AIC26_RATES, |
| 294 | .formats = AIC26_FORMATS, |
| 295 | }, |
Eric Miao | 6335d05 | 2009-03-03 09:41:00 +0800 | [diff] [blame] | 296 | .ops = &aic26_dai_ops, |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 297 | }; |
| 298 | EXPORT_SYMBOL_GPL(aic26_dai); |
| 299 | |
| 300 | /* --------------------------------------------------------------------- |
| 301 | * ALSA controls |
| 302 | */ |
| 303 | static const char *aic26_capture_src_text[] = {"Mic", "Aux"}; |
| 304 | static const struct soc_enum aic26_capture_src_enum = |
| 305 | SOC_ENUM_SINGLE(AIC26_REG_AUDIO_CTRL1, 12, 2, aic26_capture_src_text); |
| 306 | |
| 307 | static const struct snd_kcontrol_new aic26_snd_controls[] = { |
| 308 | /* Output */ |
| 309 | SOC_DOUBLE("PCM Playback Volume", AIC26_REG_DAC_GAIN, 8, 0, 0x7f, 1), |
| 310 | SOC_DOUBLE("PCM Playback Switch", AIC26_REG_DAC_GAIN, 15, 7, 1, 1), |
| 311 | SOC_SINGLE("PCM Capture Volume", AIC26_REG_ADC_GAIN, 8, 0x7f, 0), |
| 312 | SOC_SINGLE("PCM Capture Mute", AIC26_REG_ADC_GAIN, 15, 1, 1), |
| 313 | SOC_SINGLE("Keyclick activate", AIC26_REG_AUDIO_CTRL2, 15, 0x1, 0), |
| 314 | SOC_SINGLE("Keyclick amplitude", AIC26_REG_AUDIO_CTRL2, 12, 0x7, 0), |
| 315 | SOC_SINGLE("Keyclick frequency", AIC26_REG_AUDIO_CTRL2, 8, 0x7, 0), |
| 316 | SOC_SINGLE("Keyclick period", AIC26_REG_AUDIO_CTRL2, 4, 0xf, 0), |
| 317 | SOC_ENUM("Capture Source", aic26_capture_src_enum), |
| 318 | }; |
| 319 | |
| 320 | /* --------------------------------------------------------------------- |
| 321 | * SoC CODEC portion of driver: probe and release routines |
| 322 | */ |
| 323 | static int aic26_probe(struct platform_device *pdev) |
| 324 | { |
| 325 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 326 | struct snd_soc_codec *codec; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 327 | struct aic26 *aic26; |
Philipp Zabel | eb5f6d75 | 2009-03-12 11:07:54 +0100 | [diff] [blame] | 328 | int ret, err; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 329 | |
| 330 | dev_info(&pdev->dev, "Probing AIC26 SoC CODEC driver\n"); |
| 331 | dev_dbg(&pdev->dev, "socdev=%p\n", socdev); |
| 332 | dev_dbg(&pdev->dev, "codec_data=%p\n", socdev->codec_data); |
| 333 | |
| 334 | /* Fetch the relevant aic26 private data here (it's already been |
| 335 | * stored in the .codec pointer) */ |
| 336 | aic26 = socdev->codec_data; |
| 337 | if (aic26 == NULL) { |
| 338 | dev_err(&pdev->dev, "aic26: missing codec pointer\n"); |
| 339 | return -ENODEV; |
| 340 | } |
| 341 | codec = &aic26->codec; |
Mark Brown | 6627a65 | 2009-01-23 22:55:23 +0000 | [diff] [blame] | 342 | socdev->card->codec = codec; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 343 | |
| 344 | dev_dbg(&pdev->dev, "Registering PCMs, dev=%p, socdev->dev=%p\n", |
| 345 | &pdev->dev, socdev->dev); |
| 346 | /* register pcms */ |
| 347 | ret = snd_soc_new_pcms(socdev, SNDRV_DEFAULT_IDX1, SNDRV_DEFAULT_STR1); |
| 348 | if (ret < 0) { |
| 349 | dev_err(&pdev->dev, "aic26: failed to create pcms\n"); |
| 350 | return -ENODEV; |
| 351 | } |
| 352 | |
| 353 | /* register controls */ |
| 354 | dev_dbg(&pdev->dev, "Registering controls\n"); |
Philipp Zabel | eb5f6d75 | 2009-03-12 11:07:54 +0100 | [diff] [blame] | 355 | err = snd_soc_add_controls(codec, aic26_snd_controls, |
| 356 | ARRAY_SIZE(aic26_snd_controls)); |
| 357 | WARN_ON(err < 0); |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 358 | |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 359 | return 0; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 360 | } |
| 361 | |
| 362 | static int aic26_remove(struct platform_device *pdev) |
| 363 | { |
| 364 | struct snd_soc_device *socdev = platform_get_drvdata(pdev); |
| 365 | snd_soc_free_pcms(socdev); |
| 366 | return 0; |
| 367 | } |
| 368 | |
| 369 | struct snd_soc_codec_device aic26_soc_codec_dev = { |
| 370 | .probe = aic26_probe, |
| 371 | .remove = aic26_remove, |
| 372 | }; |
Mark Brown | ecb0b3f | 2008-07-29 11:42:32 +0100 | [diff] [blame] | 373 | EXPORT_SYMBOL_GPL(aic26_soc_codec_dev); |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 374 | |
| 375 | /* --------------------------------------------------------------------- |
| 376 | * SPI device portion of driver: sysfs files for debugging |
| 377 | */ |
| 378 | |
| 379 | static ssize_t aic26_keyclick_show(struct device *dev, |
| 380 | struct device_attribute *attr, char *buf) |
| 381 | { |
| 382 | struct aic26 *aic26 = dev_get_drvdata(dev); |
| 383 | int val, amp, freq, len; |
| 384 | |
| 385 | val = aic26_reg_read_cache(&aic26->codec, AIC26_REG_AUDIO_CTRL2); |
| 386 | amp = (val >> 12) & 0x7; |
| 387 | freq = (125 << ((val >> 8) & 0x7)) >> 1; |
| 388 | len = 2 * (1 + ((val >> 4) & 0xf)); |
| 389 | |
| 390 | return sprintf(buf, "amp=%x freq=%iHz len=%iclks\n", amp, freq, len); |
| 391 | } |
| 392 | |
| 393 | /* Any write to the keyclick attribute will trigger the keyclick event */ |
| 394 | static ssize_t aic26_keyclick_set(struct device *dev, |
| 395 | struct device_attribute *attr, |
| 396 | const char *buf, size_t count) |
| 397 | { |
| 398 | struct aic26 *aic26 = dev_get_drvdata(dev); |
| 399 | int val; |
| 400 | |
| 401 | val = aic26_reg_read_cache(&aic26->codec, AIC26_REG_AUDIO_CTRL2); |
| 402 | val |= 0x8000; |
| 403 | aic26_reg_write(&aic26->codec, AIC26_REG_AUDIO_CTRL2, val); |
| 404 | |
| 405 | return count; |
| 406 | } |
| 407 | |
Mark Brown | 9cce39a | 2008-07-29 11:42:33 +0100 | [diff] [blame] | 408 | static DEVICE_ATTR(keyclick, 0644, aic26_keyclick_show, aic26_keyclick_set); |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 409 | |
| 410 | /* --------------------------------------------------------------------- |
| 411 | * SPI device portion of driver: probe and release routines and SPI |
| 412 | * driver registration. |
| 413 | */ |
| 414 | static int aic26_spi_probe(struct spi_device *spi) |
| 415 | { |
| 416 | struct aic26 *aic26; |
Mark Brown | 64089b8 | 2008-12-08 19:17:58 +0000 | [diff] [blame] | 417 | int ret, i, reg; |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 418 | |
| 419 | dev_dbg(&spi->dev, "probing tlv320aic26 spi device\n"); |
| 420 | |
| 421 | /* Allocate driver data */ |
| 422 | aic26 = kzalloc(sizeof *aic26, GFP_KERNEL); |
| 423 | if (!aic26) |
| 424 | return -ENOMEM; |
| 425 | |
| 426 | /* Initialize the driver data */ |
| 427 | aic26->spi = spi; |
| 428 | dev_set_drvdata(&spi->dev, aic26); |
| 429 | |
| 430 | /* Setup what we can in the codec structure so that the register |
| 431 | * access functions will work as expected. More will be filled |
| 432 | * out when it is probed by the SoC CODEC part of this driver */ |
| 433 | aic26->codec.private_data = aic26; |
| 434 | aic26->codec.name = "aic26"; |
| 435 | aic26->codec.owner = THIS_MODULE; |
| 436 | aic26->codec.dai = &aic26_dai; |
| 437 | aic26->codec.num_dai = 1; |
| 438 | aic26->codec.read = aic26_reg_read; |
| 439 | aic26->codec.write = aic26_reg_write; |
| 440 | aic26->master = 1; |
| 441 | mutex_init(&aic26->codec.mutex); |
| 442 | INIT_LIST_HEAD(&aic26->codec.dapm_widgets); |
| 443 | INIT_LIST_HEAD(&aic26->codec.dapm_paths); |
| 444 | aic26->codec.reg_cache_size = AIC26_NUM_REGS; |
| 445 | aic26->codec.reg_cache = aic26->reg_cache; |
| 446 | |
Mark Brown | 64089b8 | 2008-12-08 19:17:58 +0000 | [diff] [blame] | 447 | aic26_dai.dev = &spi->dev; |
| 448 | ret = snd_soc_register_dai(&aic26_dai); |
| 449 | if (ret != 0) { |
| 450 | dev_err(&spi->dev, "Failed to register DAI: %d\n", ret); |
| 451 | kfree(aic26); |
| 452 | return ret; |
| 453 | } |
| 454 | |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 455 | /* Reset the codec to power on defaults */ |
| 456 | aic26_reg_write(&aic26->codec, AIC26_REG_RESET, 0xBB00); |
| 457 | |
| 458 | /* Power up CODEC */ |
| 459 | aic26_reg_write(&aic26->codec, AIC26_REG_POWER_CTRL, 0); |
| 460 | |
| 461 | /* Audio Control 3 (master mode, fsref rate) */ |
| 462 | reg = aic26_reg_read(&aic26->codec, AIC26_REG_AUDIO_CTRL3); |
| 463 | reg &= ~0xf800; |
| 464 | reg |= 0x0800; /* set master mode */ |
| 465 | aic26_reg_write(&aic26->codec, AIC26_REG_AUDIO_CTRL3, reg); |
| 466 | |
| 467 | /* Fill register cache */ |
| 468 | for (i = 0; i < ARRAY_SIZE(aic26->reg_cache); i++) |
| 469 | aic26_reg_read(&aic26->codec, i); |
| 470 | |
| 471 | /* Register the sysfs files for debugging */ |
| 472 | /* Create SysFS files */ |
Mark Brown | 64089b8 | 2008-12-08 19:17:58 +0000 | [diff] [blame] | 473 | ret = device_create_file(&spi->dev, &dev_attr_keyclick); |
| 474 | if (ret) |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 475 | dev_info(&spi->dev, "error creating sysfs files\n"); |
| 476 | |
| 477 | #if defined(CONFIG_SND_SOC_OF_SIMPLE) |
| 478 | /* Tell the of_soc helper about this codec */ |
| 479 | of_snd_soc_register_codec(&aic26_soc_codec_dev, aic26, &aic26_dai, |
| 480 | spi->dev.archdata.of_node); |
| 481 | #endif |
| 482 | |
| 483 | dev_dbg(&spi->dev, "SPI device initialized\n"); |
| 484 | return 0; |
| 485 | } |
| 486 | |
| 487 | static int aic26_spi_remove(struct spi_device *spi) |
| 488 | { |
| 489 | struct aic26 *aic26 = dev_get_drvdata(&spi->dev); |
| 490 | |
Mark Brown | 64089b8 | 2008-12-08 19:17:58 +0000 | [diff] [blame] | 491 | snd_soc_unregister_dai(&aic26_dai); |
Grant Likely | d8e3bb7 | 2008-07-29 11:42:31 +0100 | [diff] [blame] | 492 | kfree(aic26); |
| 493 | |
| 494 | return 0; |
| 495 | } |
| 496 | |
| 497 | static struct spi_driver aic26_spi = { |
| 498 | .driver = { |
| 499 | .name = "tlv320aic26", |
| 500 | .owner = THIS_MODULE, |
| 501 | }, |
| 502 | .probe = aic26_spi_probe, |
| 503 | .remove = aic26_spi_remove, |
| 504 | }; |
| 505 | |
| 506 | static int __init aic26_init(void) |
| 507 | { |
| 508 | return spi_register_driver(&aic26_spi); |
| 509 | } |
| 510 | module_init(aic26_init); |
| 511 | |
| 512 | static void __exit aic26_exit(void) |
| 513 | { |
| 514 | spi_unregister_driver(&aic26_spi); |
| 515 | } |
| 516 | module_exit(aic26_exit); |